Equilibrium sorption of propane and 1-hexene in polyethylene: Experiments and perturbed-chain statistical associating fluid theory simulations
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914169" target="_blank" >RIV/60461373:22340/17:43914169 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1021/acs.iecr.7b00572" target="_blank" >http://dx.doi.org/10.1021/acs.iecr.7b00572</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.iecr.7b00572" target="_blank" >10.1021/acs.iecr.7b00572</a>
Alternative languages
Result language
angličtina
Original language name
Equilibrium sorption of propane and 1-hexene in polyethylene: Experiments and perturbed-chain statistical associating fluid theory simulations
Original language description
The availability of sorption equilibrium data is important for the design and optimization of polymerization processes. In this work, we used a gravimetric apparatus based on a magnetic suspension balance and the perturbed-chain statistical associating fluid theory (PC-SAFT) equation of state to study the equilibrium sorption of propane and 1-hexene in polyethylene (PE). Propane is used as a diluent in the gas-phase catalytic polymerization of ethylene, while 1-hexene is a commonly used comonomer. Experiments were carried out at industrially relevant conditions using a large set of PE samples with densities from 902 to 967 kg m?3. The solubilities were rigorously evaluated using temperature-dependent crystallinities, and swelling corrections were considered. The solubilities of both penetrants increased with decreasing temperature and decreasing PE crystallinity. Additionally, the PC-SAFT binary interaction parameters did not depend on the temperature. Such dependencies are predicted by theory but are only rarely obtained for complex samples such as semicrystalline polymers. The fact that the penetrant solubilities depend on the crystallinity despite being evaluated per gram of amorphous PE supports the concept of elastic constraints.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/GA16-07898S" target="_blank" >GA16-07898S: Agglomeration of polyolefin particles investigated at meso-scale</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Industrial and Engineering Chemistry Research
ISSN
0888-5885
e-ISSN
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Volume of the periodical
56
Issue of the periodical within the volume
23
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
6820-6826
UT code for WoS article
000403631000028
EID of the result in the Scopus database
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